Drawing-die.



No. 629,50l. Patented July 25, I899. P. M. HAAS.

DRAWING DIE.

(Application filed Jan. 25, 1899.)

(No Model.)

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%, I Q Q 9 NW v mMbM UNITED STATES PATENT OFFICE.

PHILIP M. HAAS, OF YOUNGSTOYVN, OHIO, ASSIGNOR TOTHE FINISHED STEELCOMPANY, OF SAME PLACE.

DRAWING-DIE.

SPECIFICATION forming part of Letters Patent No. 629,501, dated July 25,1899.

Application filed January 25, 1899. Serial No. 703,318. (No model.)

To all whom it nutyomzcern:

Be it known that I, PHILIP M. HAAS, a citizen of the United States,residing at Youngstown, in the county of Mahoning and State of Ohio,have invented or discovered certain new and useful Improvements inDrawing- Dies, of which improvements the following is a specification.

The invention described herein relates to certain improvements in diesfor drawing bars flat or square in cross-section, and has for its objecta construction whereby various shapes or sizes may be drawn in the samedie; and it is afurther object of the invention to provide for such adjustmentof one of the sides of the dies as will permit of a change ofdraft along or adjacent to one edge of the bar.

In general terms the invention consists in the construction andcombination, substantially as hereinafter more fully described andclaimed.

In the accompanying drawings, forming a part'of this specification,Figures 1 and 2 are front elevations of my improved die, the capplatebeing removed in Fig. 1. Figs. 3 and 4 are sectional views, therespective planes of section being indicated by the lines III III and IVIV, Fig. 1.

In the practice of my invention a block of metal 1, preferably circularin contour, is cir cularly recessed in one side and an opening is formedthrough the bottomof such recess. Segmental filling-blocks 2, havingtheir outer Walls shaped to fit the sides of the recess, are arrangedtherein as shown in Fig. l. The inner walls of the filling-blocks arerecessed for the reception of the holding and adjusting wedges. Thedrawing or reducing matrix is formed by the side die-blocks 3 3 thebottom die-block 4, and the intermediate die-block 5. As shown, thebottom die-block is made of a length somewhat greater than the width ofthe widest bar to be drawn and has its inner or operative face convened,as shown in Fig. 4. The side die-blocks 3 3 bear at one end, which issuitably concaved, against the inner face of the die-block 4: and at theopposite ends against the abutments or stops 6 6, interposed between theends of the die-blocks 3 3 and the filling-pieces 2. As these abutmentsor stops simply perform the function of filling or hearing pieces, it isevident that they might be formed integral with the dieblocks 3 3 or thelatter made sufiiciently long to bear against the filling-pieces 2. Thedieblock 4 is firmly held against the ends of the side blocks 3 3 by thewedge 7, which is shifted by set-screws 8, passing through the cap-plate9. The intermediate die-block 5 has its ends concaved, so as to fit theconvex inner or operative faces of the side blocks 3 3, which are heldand adjusted by means of wedges 1O 10, said wedges being shifted by theset-screws ll, 11, (two for each wedge,) passing through the cap-plate.The intermediate die-block is adjusted and held in adjusted position bya wedge 12, between which and the die-block is interposed a block 1i.This wedge is adjusted to shift the bar by means of set-screws 13 13.The block 5, which is formed with a convex inner or operative face, ismade of a length equal to the width of the article to be drawn, and whenwider or narrower articles are to be operated on a longer or shorterdie-block is substituted.

In drawing strips and bars it frequently occurs that by reason ofunequal reduction along or adjacent to the edges the drawn strip or barwill be curved or bent edgewise, necessitating the straightening of thefinished strip. Such straightening is at all timesdifficult and at timesimpossible. In order to equalize the reduction along the edges of thestrip or bar, and thereby prevent the bending or curving of the same,the set-screw 13 or 13 is turned to force inthat end of the wedge 12 inline with the edge of the strip along which the reduction is too small,or the screw at the opposite end of the wedge may be slackened, so thatsaid end of the wedge will move out, permitting a slight movement oreasing up of the corresponding end of the dieblock 5. It will beobserved that the ends of the side blocks 3 3 adjacent to the die-block4 may be similarly adjusted to regulate the red u ction of the edges ofthe piece being drawn.

It is a distinguishing characteristic of my improvement that notonly'can the die by an adjustment of its sections be employed for thereduction of articles ofdifferent sizes and shapes, but in additionthereto one or more of the die-sections are capable of adjustment tovary the reduction along different lines during the movement of the baror strip through the die. u

I claim herein as my invention- 1. A die consisting of a series ofblocks and means for so adjusting one or more of said blocks as toincrease or diminish the reducing-aeiion of a portion of the operativeface of such block, substantially as set forth.

2. A die consisting of bottom, side and intermediate die-blocks andmeans for independently adjusting the ends of one or more of saidblocks, substantially as set forth.

3. A die consisting of a bottom block, side blocks movable along thebottom block, a re- In testimony whereof I have hereunto set 25 my hand.

PHILIP M. I-IAASi Witnesses: I

DARWIN S. WoLooTT, F. E. GAITHER.

